Segment and geographic information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 152,223	$ 124,550
Segment cost of revenue	66,438	57,923
Gross profit	85,785	66,627
Reconciliation of segment gross profit to gross profit
Amortization of capitalized software	2,700	2,000
Amortization of intangible assets	1,100
Depreciation	1,200	1,100
Stock-based compensation	13,342	10,512
Gross profit	85,785	66,627
Operating Segments
Segment Reporting Information [Line Items]
Revenue	152,223	124,550
Segment cost of revenue	61,960	55,408
Gross profit	90,263	69,142
Reconciliation of segment gross profit to gross profit
Gross profit	90,263	69,142
Segment Reconciling Items
Segment Reporting Information [Line Items]
Gross profit	4,478	2,515
Reconciliation of segment gross profit to gross profit
Amortization of capitalized software	2,724	2,012
Amortization of intangible assets	725	0
Depreciation	189	203
Stock-based compensation	840	300
Gross profit	4,478	2,515
Consumer | Operating Segments
Segment Reporting Information [Line Items]
Revenue	87,312	87,873
Segment cost of revenue	39,797	42,450
Gross profit	47,515	45,423
Reconciliation of segment gross profit to gross profit
Gross profit	47,515	45,423
Enterprise | Operating Segments
Segment Reporting Information [Line Items]
Revenue	64,911	36,677
Segment cost of revenue	22,163	12,958
Gross profit	42,748	23,719
Reconciliation of segment gross profit to gross profit
Gross profit	$ 42,748	$ 23,719